henokmuller/neon-snake ? reverse-engineered prompt

Build me a neon cyberpunk Snake game that feels like a retro arcade cabinet in the browser.

I want it to run on a single page with a glossy glassmorphism look, CRT scanlines, and a few visual themes like cyberpunk, matrix, amber, and monochrome. The game should have three speed options, casual, arcade, and hyper, plus smooth controls for keyboard, mobile swipe, and a simple touch pad on screen. Add sound effects made with the browser’s audio, so it has navigation, eat food, pause, powerup, and game over sounds without using external audio files.

Also include a way to save scores and show global leaderboards for each difficulty, with guest play and Google sign in if possible. Make it feel polished, responsive, and fun on desktop and mobile. If you need current setup details for the auth or leaderboard service, look them up online and wire it in cleanly.